If you’re not using Xcode snippets then you either type faster than Xcode can
offer to help you, or you may not have enough examples to spark your
imagination.

Brennan Stehling’s huge Xcode snippet repository would be a great place
to start! He has installation instructions and a couple of double-clickable
scripts that can put them in the right place for you if you’ve not messed with
snippets before. I’m cherry picking from his list for my own use. Some really
great ones in there.